diff --git a/app/src/main/java/org/linphone/ui/call/fragment/ActiveCallFragment.kt b/app/src/main/java/org/linphone/ui/call/fragment/ActiveCallFragment.kt
index 8a32af5a6..ab4d9e3a7 100644
--- a/app/src/main/java/org/linphone/ui/call/fragment/ActiveCallFragment.kt
+++ b/app/src/main/java/org/linphone/ui/call/fragment/ActiveCallFragment.kt
@@ -42,6 +42,7 @@ import org.linphone.core.tools.Log
 import org.linphone.databinding.CallActiveFragmentBinding
 import org.linphone.ui.GenericActivity
 import org.linphone.ui.call.CallActivity
+import org.linphone.ui.call.model.ZrtpAlertDialogModel
 import org.linphone.ui.call.model.ZrtpSasConfirmationDialogModel
 import org.linphone.ui.call.viewmodel.CallsViewModel
 import org.linphone.ui.call.viewmodel.CurrentCallViewModel
@@ -238,10 +239,7 @@ class ActiveCallFragment : GenericCallFragment() {
                         doNotTint = true
                     )
                 } else {
-                    (requireActivity() as GenericActivity).showRedToast(
-                        getString(R.string.call_can_not_be_trusted_alert_toast),
-                        R.drawable.warning_circle
-                    )
+                    showZrtpAlertDialog()
                 }
             }
         }
@@ -445,4 +443,26 @@ class ActiveCallFragment : GenericCallFragment() {
         dialog.show()
         zrtpSasDialog = dialog
     }
+
+    private fun showZrtpAlertDialog() {
+        val model = ZrtpAlertDialogModel()
+        val dialog = DialogUtils.getZrtpAlertDialog(requireActivity(), model)
+
+        model.tryAgainEvent.observe(viewLifecycleOwner) { event ->
+            event.consume {
+                callViewModel.showZrtpSasDialogIfPossible()
+                dialog.dismiss()
+            }
+        }
+
+        model.hangUpEvent.observe(viewLifecycleOwner) { event ->
+            event.consume {
+                callViewModel.hangUp()
+                dialog.dismiss()
+            }
+        }
+
+        dialog.show()
+        zrtpSasDialog = dialog
+    }
 }
diff --git a/app/src/main/java/org/linphone/ui/call/model/ZrtpAlertDialogModel.kt b/app/src/main/java/org/linphone/ui/call/model/ZrtpAlertDialogModel.kt
new file mode 100644
index 000000000..a7005c352
--- /dev/null
+++ b/app/src/main/java/org/linphone/ui/call/model/ZrtpAlertDialogModel.kt
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2010-2024 Belledonne Communications SARL.
+ *
+ * This file is part of linphone-android
+ * (see https://www.linphone.org).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.linphone.ui.call.model
+
+import androidx.annotation.UiThread
+import androidx.lifecycle.MutableLiveData
+import org.linphone.ui.GenericViewModel
+import org.linphone.utils.Event
+
+class ZrtpAlertDialogModel @UiThread constructor() : GenericViewModel() {
+    companion object {
+        private const val TAG = "[ZRTP Alert Dialog]"
+    }
+
+    val tryAgainEvent = MutableLiveData<Event<Boolean>>()
+
+    val hangUpEvent = MutableLiveData<Event<Boolean>>()
+
+    @UiThread
+    fun tryAgain() {
+        tryAgainEvent.value = Event(true)
+    }
+
+    @UiThread
+    fun hangUp() {
+        hangUpEvent.value = Event(true)
+    }
+}
diff --git a/app/src/main/java/org/linphone/ui/call/viewmodel/CurrentCallViewModel.kt b/app/src/main/java/org/linphone/ui/call/viewmodel/CurrentCallViewModel.kt
index a7d236cc7..13898fa8b 100644
--- a/app/src/main/java/org/linphone/ui/call/viewmodel/CurrentCallViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/call/viewmodel/CurrentCallViewModel.kt
@@ -245,6 +245,9 @@ class CurrentCallViewModel @UiThread constructor() : GenericViewModel() {
             )
             isZrtpSasValidationRequired.postValue(!verified)
             zrtpAuthTokenVerifiedEvent.postValue(Event(verified))
+            if (verified) {
+                isMediaEncrypted.postValue(true)
+            }
         }
 
         override fun onRemoteRecording(call: Call, recording: Boolean) {
@@ -956,13 +959,19 @@ class CurrentCallViewModel @UiThread constructor() : GenericViewModel() {
         coreContext.postOnCoreThread {
             if (currentCall.currentParams.mediaEncryption == MediaEncryption.ZRTP) {
                 val isDeviceTrusted = currentCall.authenticationTokenVerified
+                val cacheMismatch = currentCall.zrtpCacheMismatchFlag
                 Log.i(
                     "$TAG Current call media encryption is ZRTP, auth token is [${if (isDeviceTrusted) "trusted" else "not trusted yet"}]"
                 )
                 val tokenToRead = currentCall.localAuthenticationToken
                 val tokensToDisplay = currentCall.remoteAuthenticationTokens.toList()
                 if (!tokenToRead.isNullOrEmpty() && tokensToDisplay.size == 4) {
-                    showZrtpSasDialogEvent.postValue(Event(Pair(tokenToRead, tokensToDisplay)))
+                    val event = Event(Pair(tokenToRead, tokensToDisplay))
+                    if (cacheMismatch) {
+                        showZrtpSasCacheMismatchDialogEvent.postValue(event)
+                    } else {
+                        showZrtpSasDialogEvent.postValue(event)
+                    }
                 } else {
                     Log.w(
                         "$TAG Either local auth token is null/empty or remote tokens list doesn't contains 4 elements!"
diff --git a/app/src/main/java/org/linphone/utils/DialogUtils.kt b/app/src/main/java/org/linphone/utils/DialogUtils.kt
index a270a45f5..cc02556e6 100644
--- a/app/src/main/java/org/linphone/utils/DialogUtils.kt
+++ b/app/src/main/java/org/linphone/utils/DialogUtils.kt
@@ -37,7 +37,6 @@ import org.linphone.databinding.DialogAssistantAcceptConditionsAndPolicyBinding
 import org.linphone.databinding.DialogAssistantCreateAccountConfirmPhoneNumberBinding
 import org.linphone.databinding.DialogCancelContactChangesBinding
 import org.linphone.databinding.DialogCancelMeetingBinding
-import org.linphone.databinding.DialogConfirmZrtpSasBinding
 import org.linphone.databinding.DialogContactConfirmTrustCallBinding
 import org.linphone.databinding.DialogContactTrustProcessBinding
 import org.linphone.databinding.DialogDeleteContactBinding
@@ -53,8 +52,11 @@ import org.linphone.databinding.DialogRemoveConversationHistoryBinding
 import org.linphone.databinding.DialogSetOrEditGroupSubjectBindingImpl
 import org.linphone.databinding.DialogUpdateAccountPasswordBinding
 import org.linphone.databinding.DialogUpdateAvailableBinding
+import org.linphone.databinding.DialogZrtpSasValidationBinding
+import org.linphone.databinding.DialogZrtpSecurityAlertBinding
 import org.linphone.ui.assistant.model.AcceptConditionsAndPolicyDialogModel
 import org.linphone.ui.assistant.model.ConfirmPhoneNumberDialogModel
+import org.linphone.ui.call.model.ZrtpAlertDialogModel
 import org.linphone.ui.call.model.ZrtpSasConfirmationDialogModel
 import org.linphone.ui.main.contacts.model.NumberOrAddressPickerDialogModel
 import org.linphone.ui.main.contacts.model.TrustCallDialogModel
@@ -343,9 +345,25 @@ class DialogUtils {
             context: Context,
             viewModel: ZrtpSasConfirmationDialogModel
         ): Dialog {
-            val binding: DialogConfirmZrtpSasBinding = DataBindingUtil.inflate(
+            val binding: DialogZrtpSasValidationBinding = DataBindingUtil.inflate(
                 LayoutInflater.from(context),
-                R.layout.dialog_confirm_zrtp_sas,
+                R.layout.dialog_zrtp_sas_validation,
+                null,
+                false
+            )
+            binding.viewModel = viewModel
+
+            return getDialog(context, binding)
+        }
+
+        @UiThread
+        fun getZrtpAlertDialog(
+            context: Context,
+            viewModel: ZrtpAlertDialogModel
+        ): Dialog {
+            val binding: DialogZrtpSecurityAlertBinding = DataBindingUtil.inflate(
+                LayoutInflater.from(context),
+                R.layout.dialog_zrtp_security_alert,
                 null,
                 false
             )
diff --git a/app/src/main/res/drawable/shape_red_button_background.xml b/app/src/main/res/drawable/shape_red_button_background.xml
new file mode 100644
index 000000000..e94a9096f
--- /dev/null
+++ b/app/src/main/res/drawable/shape_red_button_background.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
+    <corners android:radius="48dp" />
+    <solid android:color="?attr/color_danger_500" />
+</shape>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/shape_zrtp_dialog_error_background.xml b/app/src/main/res/drawable/shape_zrtp_dialog_error_background.xml
new file mode 100644
index 000000000..e5bf1ba07
--- /dev/null
+++ b/app/src/main/res/drawable/shape_zrtp_dialog_error_background.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list
+    xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape android:shape="rectangle">
+            <corners android:bottomLeftRadius="15dp" android:bottomRightRadius="15dp" />
+            <solid
+                android:color="@color/red_danger_500"/>
+        </shape>
+    </item>
+    <item android:bottom="2dp">
+        <shape android:shape="rectangle">
+            <corners android:radius="15dp" />
+            <solid
+                android:color="@color/white" />
+        </shape>
+    </item>
+</layer-list>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/shape_zrtp_dialog_error_header_background.xml b/app/src/main/res/drawable/shape_zrtp_dialog_error_header_background.xml
new file mode 100644
index 000000000..da6383e65
--- /dev/null
+++ b/app/src/main/res/drawable/shape_zrtp_dialog_error_header_background.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list
+    xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape android:shape="rectangle">
+            <corners android:topLeftRadius="15dp" android:topRightRadius="15dp" />
+            <solid android:color="@color/red_danger_500"/>
+        </shape>
+    </item>
+</layer-list>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/shield_warning.xml b/app/src/main/res/drawable/shield_warning.xml
new file mode 100644
index 000000000..76fbdb097
--- /dev/null
+++ b/app/src/main/res/drawable/shield_warning.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="256"
+    android:viewportHeight="256">
+  <path
+      android:pathData="M120,136L120,96a8,8 0,0 1,16 0v40a8,8 0,0 1,-16 0ZM128,184a12,12 0,1 0,-12 -12A12,12 0,0 0,128 184ZM224,56v56c0,52.72 -25.52,84.67 -46.93,102.19 -23.06,18.86 -46,25.27 -47,25.53a8,8 0,0 1,-4.2 0c-1,-0.26 -23.91,-6.67 -47,-25.53C57.52,196.67 32,164.72 32,112L32,56A16,16 0,0 1,48 40L208,40A16,16 0,0 1,224 56ZM208,56L48,56l0,56c0,37.3 13.82,67.51 41.07,89.81A128.25,128.25 0,0 0,128 223.62a129.3,129.3 0,0 0,39.41 -22.2C194.34,179.16 208,149.07 208,112Z"
+        android:fillColor="#364860"/>
+</vector>
diff --git a/app/src/main/res/layout-land/dialog_confirm_zrtp_sas.xml b/app/src/main/res/layout-land/dialog_zrtp_sas_validation.xml
similarity index 100%
rename from app/src/main/res/layout-land/dialog_confirm_zrtp_sas.xml
rename to app/src/main/res/layout-land/dialog_zrtp_sas_validation.xml
diff --git a/app/src/main/res/layout/dialog_confirm_zrtp_sas.xml b/app/src/main/res/layout/dialog_zrtp_sas_validation.xml
similarity index 100%
rename from app/src/main/res/layout/dialog_confirm_zrtp_sas.xml
rename to app/src/main/res/layout/dialog_zrtp_sas_validation.xml
diff --git a/app/src/main/res/layout/dialog_zrtp_security_alert.xml b/app/src/main/res/layout/dialog_zrtp_security_alert.xml
new file mode 100644
index 000000000..f8b87e820
--- /dev/null
+++ b/app/src/main/res/layout/dialog_zrtp_security_alert.xml
@@ -0,0 +1,133 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <data>
+        <import type="android.view.View" />
+        <import type="android.graphics.Typeface" />
+        <variable
+            name="viewModel"
+            type="org.linphone.ui.call.model.ZrtpAlertDialogModel" />
+    </data>
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_marginStart="10dp"
+        android:layout_marginEnd="10dp">
+
+        <androidx.constraintlayout.widget.ConstraintLayout
+            android:id="@+id/header"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:background="@drawable/shape_zrtp_dialog_error_header_background"
+            app:layout_constraintVertical_chainStyle="packed"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toTopOf="@id/body">
+
+            <ImageView
+                android:id="@+id/header_icon"
+                android:layout_width="@dimen/icon_size"
+                android:layout_height="@dimen/icon_size"
+                android:layout_marginTop="10dp"
+                android:src="@drawable/shield_warning"
+                app:layout_constraintTop_toTopOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:tint="@color/white" />
+
+            <androidx.appcompat.widget.AppCompatTextView
+                style="@style/default_text_style_700"
+                android:id="@id/header_title"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="5dp"
+                android:paddingBottom="10dp"
+                android:text="@string/call_dialog_zrtp_security_alert_title"
+                android:textSize="14sp"
+                android:textColor="@color/white"
+                app:layout_constraintTop_toBottomOf="@id/header_icon"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintEnd_toEndOf="parent" />
+
+        </androidx.constraintlayout.widget.ConstraintLayout>
+
+        <androidx.constraintlayout.widget.ConstraintLayout
+            android:id="@+id/body"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:background="@drawable/shape_zrtp_dialog_error_background"
+            app:layout_constraintTop_toBottomOf="@id/header"
+            app:layout_constraintBottom_toBottomOf="parent">
+
+            <androidx.appcompat.widget.AppCompatTextView
+                style="@style/default_text_style"
+                android:id="@+id/message"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="15dp"
+                android:layout_marginEnd="15dp"
+                android:layout_marginTop="10dp"
+                android:text="@string/call_dialog_zrtp_security_alert_message"
+                android:textSize="14sp"
+                android:textColor="@color/gray_main2_600"
+                android:gravity="center"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintTop_toTopOf="parent" />
+
+            <androidx.appcompat.widget.AppCompatTextView
+                style="@style/default_text_style_600"
+                android:id="@+id/try_again"
+                android:onClick="@{() -> viewModel.tryAgain()}"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="15dp"
+                android:layout_marginStart="30dp"
+                android:layout_marginEnd="30dp"
+                android:paddingBottom="@dimen/primary_secondary_buttons_label_padding"
+                android:paddingTop="@dimen/primary_secondary_buttons_label_padding"
+                android:gravity="center"
+                android:background="@drawable/shape_red_outlined_button_background"
+                android:text="@string/call_dialog_zrtp_security_alert_try_again"
+                android:textSize="18sp"
+                android:textColor="?attr/color_danger_500"
+                android:maxLines="1"
+                android:ellipsize="end"
+                app:layout_constraintWidth_max="@dimen/button_max_width"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintTop_toBottomOf="@id/message"
+                app:layout_constraintBottom_toTopOf="@id/hang_up"/>
+
+            <androidx.appcompat.widget.AppCompatTextView
+                style="@style/default_text_style_600"
+                android:id="@+id/hang_up"
+                android:onClick="@{() -> viewModel.hangUp()}"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="15dp"
+                android:layout_marginBottom="15dp"
+                android:layout_marginStart="30dp"
+                android:layout_marginEnd="30dp"
+                android:paddingBottom="@dimen/primary_secondary_buttons_label_padding"
+                android:paddingTop="@dimen/primary_secondary_buttons_label_padding"
+                android:gravity="center"
+                android:background="@drawable/shape_red_button_background"
+                android:text="@string/call_action_hang_up"
+                android:textSize="18sp"
+                android:textColor="@color/white"
+                android:maxLines="1"
+                android:ellipsize="end"
+                app:layout_constraintWidth_max="@dimen/button_max_width"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintTop_toBottomOf="@id/try_again"
+                app:layout_constraintBottom_toBottomOf="parent"/>
+
+        </androidx.constraintlayout.widget.ConstraintLayout>
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+</layout>
\ No newline at end of file
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 5e3a1d141..0b56ef70a 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -592,6 +592,9 @@
     <string name="call_dialog_zrtp_validate_trust_local_code_label">Votre code :</string>
     <string name="call_dialog_zrtp_validate_trust_remote_code_label">Code correspondant : </string>
     <string name="call_dialog_zrtp_validate_trust_letters_do_not_match">Aucune correspondance</string>
+    <string name="call_dialog_zrtp_security_alert_title">Security alert</string>
+    <string name="call_dialog_zrtp_security_alert_try_again">Réessayer</string>
+    <string name="call_dialog_zrtp_security_alert_message">La confidentialité de votre appel peut être compromise !</string>
 
     <string name="call_audio_device_type_earpiece">Oreilette</string>
     <string name="call_audio_device_type_speaker">Haut parleur</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 4df340fe1..c68d4faf6 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -629,6 +629,9 @@
     <string name="call_dialog_zrtp_validate_trust_local_code_label">Your code:</string>
     <string name="call_dialog_zrtp_validate_trust_remote_code_label">Correspondent code:</string>
     <string name="call_dialog_zrtp_validate_trust_letters_do_not_match">Nothing matches</string>
+    <string name="call_dialog_zrtp_security_alert_title">Security alert</string>
+    <string name="call_dialog_zrtp_security_alert_try_again">Try again</string>
+    <string name="call_dialog_zrtp_security_alert_message">This call confidentiality may be compromise!</string>
 
     <string name="call_audio_device_type_earpiece">Earpiece</string>
     <string name="call_audio_device_type_speaker">Speaker</string>